- [CHANGELOG-1.17.md](./CHANGELOG-1.17.md)
- [CHANGELOG-1.16.md](./CHANGELOG-1.16.md)
- [CHANGELOG-1.15.md](./CHANGELOG-1.15.md)
- [CHANGELOG-1.14.md](./CHANGELOG-1.14.md)
- [CHANGELOG-1.13.md](./CHANGELOG-1.13.md)
- [CHANGELOG-1.12.md](./CHANGELOG-1.12.md)
- [CHANGELOG-1.11.md](./CHANGELOG-1.11.md)
- [CHANGELOG-1.10.md](./CHANGELOG-1.10.md)
- [CHANGELOG-1.9.md](./CHANGELOG-1.9.md)
- [CHANGELOG-1.8.md](./CHANGELOG-1.8.md)

        executionEventLogger.projectStarted(projectStartedEvent3);

        // verify
        InOrder inOrder = inOrder(logger);
        inOrder.verify(logger).info(matches(".*Apache Maven Embedder 1.*\\[1\\/3\\]"));
        inOrder.verify(logger).info(matches(".*Apache Maven Embedder 2.*\\[2\\/3\\]"));
        inOrder.verify(logger).info(matches(".*Apache Maven Embedder 3.*\\[3\\/3\\]"));
    }

    @Test

* 处理数据：
    * 例如，假设您收到的文件必须经过一个缓慢的过程，您可以返回一个"Accepted"(HTTP 202)响应并在后台处理它。

## 使用 `BackgroundTasks`

首先导入 `BackgroundTasks` 并在 *路径操作函数* 中使用类型声明 `BackgroundTasks` 定义一个参数：

```Python hl_lines="1  13"
{!../../docs_src/background_tasks/tutorial001.py!}
```

**FastAPI** 会创建一个 `BackgroundTasks` 类型的对象并作为该参数传入。

## 创建一个任务函数

创建要作为后台任务运行的函数。

它只是一个可以接收参数的标准函数。

## ⚙️ `BackgroundTasks`

🥇, 🗄 `BackgroundTasks` & 🔬 🔢 👆 *➡ 🛠️ 🔢* ⏮️ 🆎 📄 `BackgroundTasks`:

```Python hl_lines="1  13"
{!../../docs_src/background_tasks/tutorial001.py!}
```

**FastAPI** 🔜 ✍ 🎚 🆎 `BackgroundTasks` 👆 & 🚶‍♀️ ⚫️ 👈 🔢.

## ✍ 📋 🔢

✍ 🔢 🏃 🖥 📋.

⚫️ 🐩 🔢 👈 💪 📨 🔢.

## `BackgroundTasks` verwenden

Importieren Sie zunächst `BackgroundTasks` und definieren Sie einen Parameter in Ihrer *Pfadoperation-Funktion* mit der Typdeklaration `BackgroundTasks`:

```Python hl_lines="1  13"
{!../../docs_src/background_tasks/tutorial001.py!}
```

**FastAPI** erstellt für Sie das Objekt vom Typ `BackgroundTasks` und übergibt es als diesen Parameter.

## Eine Taskfunktion erstellen

```console
$ pytest

================ test session starts ================
platform linux -- Python 3.6.9, pytest-5.3.5, py-1.8.1, pluggy-0.13.1
rootdir: /home/user/code/superawesome-cli/app
plugins: forked-1.1.3, xdist-1.31.0, cov-2.8.1
collected 6 items

---> 100%

test_main.py <span style="color: green; white-space: pre;">......                            [100%]</span>

## Использование класса `BackgroundTasks`

Сначала импортируйте `BackgroundTasks`, потом добавьте в функцию параметр с типом `BackgroundTasks`:

```Python hl_lines="1  13"
{!../../docs_src/background_tasks/tutorial001.py!}
```

**FastAPI** создаст объект класса `BackgroundTasks` для вас и запишет его в параметр.

## Создание функции для фоновой задачи

- github.com/tchap/go-patricia/v2: [v2.3.1](https://github.com/tchap/go-patricia/tree/v2.3.1)
- github.com/vbatts/tar-split: [v0.11.3](https://github.com/vbatts/tar-split/tree/v0.11.3)
- github.com/veraison/go-cose: [v1.2.0](https://github.com/veraison/go-cose/tree/v1.2.0)
- github.com/xeipuuv/gojsonpointer: [02993c4](https://github.com/xeipuuv/gojsonpointer/tree/02993c4)

```console
$ pytest

================ test session starts ================
platform linux -- Python 3.6.9, pytest-5.3.5, py-1.8.1, pluggy-0.13.1
rootdir: /home/user/code/superawesome-cli/app
plugins: forked-1.1.3, xdist-1.31.0, cov-2.8.1
collected 6 items

---> 100%

test_main.py <span style="color: green; white-space: pre;">......                            [100%]</span>

### Gerenciador de Contexto Assíncrono

Se você verificar, a função está decorada com um `@asynccontextmanager`.

Que converte a função em algo chamado de "**Gerenciador de Contexto Assíncrono**".

```Python hl_lines="1  13"
{!../../docs_src/events/tutorial003.py!}
```

Um **gerenciador de contexto** em Python é algo que você pode usar em uma declaração `with`, por exemplo, `open()` pode ser usado como um gerenciador de contexto:

```Python